There has been brutal culling of Wall Street traders

More than 10,ooo jobs in sales and trading have disappeared since 2010, with some business lines, like bond trading, especially hard-hit.

The top 10 global banks have seen a 30% decrease in fixed-income front-office headcount and a 16% reduction in equities front-office staff since 2010, according to the data-analytics company Coalition.

Coalition tracked front-office headcount from 2010 through the first half of 2015 and looked at fixed-income revenue producers in areas like commodities, credit, foreign exchange, rates, securitization, and emerging markets.

On the equity side, Coalition tracked the number of traders and salespeople in institutional cash equities, equity derivatives and convertibles, futures and options, and prime services.

Note: Coalition's bank index included Bank of America, Barclays, Citi, Credit Suisse, Deutsche Bank, Goldman Sachs, JPMorgan, Morgan Stanley, UBS, and the Royal Bank of Scotland from 2010 to 2012. From 2013 to 2015, Royal Bank of Scotland was removed from the index, and replaced by BNP Paribas.

Total fixed-income front-office headcount dropped from 24,312 staff in 2010 to 17,100 in the first half of 2015. Total equities headcount fell from 20,592 people in 2010 to 17,345 in 2015.

Business Insider/Andy Kiersz

Here's a look at the numbers for fixed-income traders. Headcount for rates products like government bonds and interest-rate derivatives dropped significantly, from 7,527 in 2010 to 5,260 in the first half of 2015.

Business Insider/Andy Kiersz

Within equities, there was a sharp drop-off in front-office headcount in institutional cash equities, from 11,319 people in 2010 to 8,307 people in the first half of 2015.